Office chair



FIG. 1 is a perspective view generally taken from one side of the office chair showing the design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left view thereof;

FIG. 5 is a right view thereof; and,

FIG. 6 is a top plan view thereof.

The fragmented depiction of the mesh pattern on the backrest repeats uniformly throughout the circumscribed areas. 

The ornamental design for an office chair, as shown and described. 